Axle-box lid



(No Model.)

N. H. DAVIS.

AXLE BOX LID.

No. 570,912. Patented Nov. 10, 1896'.

l 22 BIA,

Witnesses. Q V Inventor. V -M- ms PETERS co. morauwou WASHINGYON. o. c.

' the line 1 1 of Fig. 3.

I UNITED STATES PATENT OFFICE.

NATHAN H. DAVIS, OF PHILADELPHIA, PENNSYLVANIA.

AXLE-BOX LID.

SPECIFICATION forming part of Letters Patent No. 570,912, dated November10, 1896.

Application filed March 14, 1896.

To all whom it may OOI'LGGI'IL.

Be it known that I, NATHAN ll. DAVIS, a citizen of the United States,residing in the city and county of Philadelphia, in the State ofPennsylvania, have invented a certain new and useful Improvement inAxle-Box Lids, of which the following is a true and exact description,reference being had to the accompanying drawings, which form a part ofthis specification.

My invention relates to axle-box lids, and has for its object to providea lid of the kind used for closing the opening of axle-boxes used onrailway-cars which shall be at once simple, cheap, and efficient.Particularly my invention relates to the construction of that part ofthe lid by which the lid-sprin g is anchored and held in place upon thelid.

The nature of my improvements will be best understood as described inconnection with the drawings, in which they are illustrated, and inwhich- Figure l is a sectional view of a car-axle boxv provided with myimproved lid. Fig. .2 is a longitudinal section through the lid, takenon Fig. 3 is a plan view of the inside of the lid. Fig. 4 is across-section taken on the line 2 2 of Figs. 2 and 3, and Fig.

5 is a similar cross-section illustrating a modification of theinvention.

A indicates the boxlid, which is shown as made up of stamped malleablemetal, steel plates being generally used for the purpose. The fiatportion of the lid which rests upon the edges of the opening in the boxis indicated at A. A indicates a strengthening-rib or cor- 1 rugationthrown up out of the metal of the lid.

A is the hood of the lid; A, the central groove formed in the lid forthe purpose of affording an anchorage to the lid-spring,which isindicated at 0. As shown in Figs. 1, 2, 3, and 4, the groove A is formedby pressing upward a portion of themetal of the lid. A similar groove isshown in Fig. 5 as formed by pushing downward two corrugations the innerwalls of which form the walls of the groove A. The two methods ofconstruction are manifestly equivalent, both resulting in the formationof the necessary groove for holding the springplate.

a (0 indicate trunnion-like bosses, formed by pressing inward a portionof the metal form- $eria1No- 583,213. (No model.)

ing the walls of the groove A These bosses are of circular orapproximately circular section and are situated at such a distance fromthe top of the groove A and from the rear wall of said groove (indicatedat A as will permit of the insertion of the hooked end 0' of the spring0. The method of inserting the spring is shown in Fig. 2, the springbeing first presented to the lid, as indicated by dotted lines, with itshooked end extending over the round trunnion-like bosses ct and thenturned upward so as to lie in the groove A, as indicated in full lines.

The hinge-eyes of the lid are indicated at A ,and at A A, Fig.5, 1 haveindicated the two downwardly-extending grooves, which, as al readyexplained, may be used to form the groove A, instead of forming it asshown in the other figures of the drawings.

B indicates the axle-box, the edges of the opening therein beingindicated at B,while B indicates the projection at the top of theopening in the box to which the lid A is hinged and upon the end ofwhich the outer end of the spring 0 rests.

The novel feature of my invention consists, essentially, in theformation of the groove A and the provision of the round trunnion-likebosses a, formed integral with the Walls of this groove and in such aposition as to afford a support and anchorage for the hooked end of aspring 0. By this method of construction I am enabled to provide asecure anchorage for the spring without necessitating a perforation ofthe lid or the use of a separate piece of metal riveted or otherwisesecured to the lid for the purpose of anchoring the spring in position.My construction also enables the spring to be inserted and removedinstantly at any time, while at the same time securing wrought metalhaving a corrugation forming a deep central groove as A and indentationsforming trunnion-like bosses a integral with the lid and extendinginward from the walls of said groove A at a distance from the end wallof the groove suffieient to afford room for the hooked end ofaspring-plate loetwee11 said bosses and said end wall.

3. An axle-box lid having a deep central groove as A and trunnion-likebosses a formed integral with the lid and extending inward from thewalls of said groove at a distanee'from the end Wall of the groovesufficient to afford room for the hooked end of a springplate betweensaid bosses and said end wall in combination with hooked endedspringplate as 0 adapted to hook onto the bosses a and lie in the grooveAt NATHAN I-I. DAVIS.

lYitnesses CHARLES F. ZIEGLER, D. STEWART.

